package com.tul.exercise.base.thread.base;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * 线程名命工程
 * @author tuliang
 */
public class NamedThreadFactory implements ThreadFactory {
    /**
     * poolNumber
     */
    private static final AtomicInteger POOL_NUMBER = new AtomicInteger(1);

    /**
     * group
     */
    private final ThreadGroup group;

    /**
     * 线程数
     */
    private final AtomicInteger threadNumber = new AtomicInteger(1);

    /**
     * 线程前缀
     */
    private final String namePrefix;

    /**
     * NamedThreadFactory
     *
     * @param name name
     */
    public NamedThreadFactory(String name) {
        SecurityManager s = System.getSecurityManager();
        group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();
        namePrefix = "pool-" + POOL_NUMBER.getAndIncrement() + "-" + name + "-thread-";
    }

    @Override
    public Thread newThread(Runnable r) {
        Thread t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement(), 0);
        if (t.isDaemon()) {
            t.setDaemon(false);
        }

        if (t.getPriority() != Thread.NORM_PRIORITY) {
            t.setPriority(Thread.NORM_PRIORITY);
        }

        return t;
    }
}
